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DCF-TM-25/400P-08

LMA Tm doped fiber

Cladding Absorption @ 790 nm (dB/m)
3.9 ± 0.6
Numerical Aperture-Cladding
Min 0.45
Numerical Aperture-Core
0.085 ± 0.01
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Home > Optical fiber > Active Fibers > Thulium Fibers > DCF-TM-25/400P-08

LMA Tm doped fiber

DCF-TM-25/400P-08

Description

Specifications
Specifications

The DCF-TM-25/400P-08 is a large-mode-area (LMA), double-clad, thulium-doped fiber featuring an optimized pedestal core design for high-power operation in the 1.9 – 2.1 µm wavelenght range. With a 25 µm core and a 400 µm pump cladding, it delivers excellent beam quality, high brightness, and efficient pump absorption, making it an ideal gain medium for high-power fiber lasers and amplifiers.

Features & Benefits

  • Octogonal cladding shape
  • High and constant pump absorption
  • Tested at >100 kpsi to ensure long-term reliability during winding
  • Strong power scaling capability

Applications

  • Medical precision
  • High brightness laser systems
  • Coherent sensing
  • Mid-IR pumping
  • Directed energy and advanced research

Optical fiber specifications

Optical

Cladding Absorption @ 790 nm (dB/m)
3.9 ± 0.6
Numerical Aperture-Cladding
Min 0.45
Numerical Aperture-Core
0.085 ± 0.01

Geometrical & Mechanical

Cladding diameter (µm)
400 ± 10
Cladding geometry
Oct.
Coating diameter (µm)
565 ± 15
Coating Diameter (µm)
25 ± 1
Core Ovality (%)
<= 8
Core/Cladding Concentricity Error (µm)
<= 2
Proof test (kpsi)
>= 100

Environmental

Storage Temperature (°C)
-40 to +85

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